body{
  padding: 0;
  margin:0;
  background: url("./images/bg.png");
  background-position: center;
  background-size: 100% 100%;
  background-attachment: fixed;
  background-repeat: no-repeat;
  font-family: Consolas, 'Courier New', monospace;
}
h2.logo{
  color:whitesmoke;
  height: 60px;
  line-height: 60px;
  padding-left:10px;
  margin: 0;
  background-image: linear-gradient(to right ,rgba(0,100,200,.8),rgba(0,255,255,.8));
}

nav.router-nav{
  position: absolute;
  top:0;
  left: 50vw;
  transform: translateX(-50%);
}

nav.router-nav > ul{
  margin:0;
  padding: 0;
  height: 60px;
  list-style: none;
  border-bottom: 0;
  padding-left:15px
}

nav.router-nav > ul> li{
  float: left;
  margin-left: 0px;
  margin-top:10px;
  display: block;
  height: 50px;
  min-width:100px;
  text-align: center;
  line-height: 50px;
  color:orange;
  padding:0 7px 0 7px;
  border:1px solid rgba(0,0,0,.3);
  box-sizing: border-box;
}
nav.router-nav > ul > li > a{
  text-decoration: none;
  font-weight: bold;
  color: inherit;
  display: inline-block;
  height: 100%;
  width: 100%;
}

nav.router-nav > ul > li:hover{
  background-color:rgba(0,100,200,.8);
  color: aliceblue;
}